Pump or compressor



Nov. 29, 1932'. P. ZENS 7 1,889,508

PUMP OR COMPRESSOR Filed June 18. 1930 4 Sheets-Sheet 1 By [Ti/f1.

Nov. 29, 1932. P. ZENS' 1,889,508

PUMP OR COMPRESSOR Filed June 18. 1930 4 Sheets-Sheet 2 9,1 nw s.

NOV. 29, 1932. p, ZENS 1,889,508

' PUMP OR 'COMPRESSQR Filed June 18. 1930 4 Sheets-Sheet 3 I I I 0. II)I "w, iilwl zi """""II,,, N

R e n S Nov. 29, 1932. Y P. ZENS PUMP OR COMPRESSOR Filed June 18, 19304 Sheets-Sheet 4' Patented Nov. 29, 1932 PIERRE ZENS, 0F PARIS, FRANCEPATENT oFncE PUMP OR COMPRESSOR Application filed June 18, 1930, SerialNo. 462,095, and in France June 28, 1988.

The present invention has for object a constant feed pump substantiallyconsisting in combining, in one and the same structure a pump casing thegeneral external shape of which is that of a solid generated by anysurface rotating about an axis, pistons or blades angularly movable inthe pump casing about the said axis, and means for displacing thesepistons in the pump casing and for causing the relative speed of eachpiston to periodically vary relatively to the adjacent pistons, so thatthe volumes of the various chambers formed by the pump casin and thesaid pistons periodically vary and allow the suction and delivery of thefluid in combination with ports accessorily provided with control means.

In the accompanying drawings wherein an approved embodiment of theinvention is illustrated:

Figs. 1 and 1a taken together present a longitudinal sectional viewthrough a pump or compressor constructed in accordance with theinvention.

Fig. 2 is a transverse section through the pump showing the constructionand arrangement of the blades.

Flg. 3 is a transverse section on the line 0 3-3 of Fig. 1.

Referring to the drawings in detail, a casing or cylinder 250 isprovided with suction ports 250 and delivery ports 250' which aresuitably located. The blades (eight in number in the exampleillustrated) are rigid, the blades 251 with the shaft 254, and theblades 255, with the shaft 258 co-axial with the shaft 254. Cranks 254and 258", rigid with the shafts 254 and 258 res ectivel are controlled,through the me ium 0 links 254 and 258", by eccentrics 259 and 260carried by toothed wheels 261 and 262. The said wheels are journalled,through the medium of special roller bearings, in cheeks 263 and 264connected by a cylindrical part 323 provided with cut away parts 265 and266 for the passage of the gears 261 and 262. The cheeks are centeredrelatively to the general axis of the compressor. The cheek 263 isjournalled, through the medium of roller bearings 268, and the cheek 264is axially extended, on the one hand, to form a shaft 27 0 coupled to adriving shaft (not shown) and, on the other hand, by a centering ring271. The toothed wheels 261 and 262 mesh with a fixed double internallytoothed. crown 272.

This crown is rigidly secured to a casing 273 in which it is centered.

The operation of the compressor above described is the followin i Theshaft 270 duringrotation, turns the cheeks 263-264 and the toothedwheels 261 and 262 meshing with the fixed crown 272, are rotated so thatthese toothed wheels also rotate about their axes. This rotationdetermines the displacement of. the eccentrics and, consequently, therelative displacement of the shafts 254 and 258 as well as of the bladescarried by the latter. The links always operate in the re 'on of themaximum moment relatively to tfih axis of rotation of the blades.

The latter are so operated that the suction and delivery ports are neverin communication and that the relative movements of the blades effectthe desired suction and delivery.

Moreover, it' will be noted that the shaft 258 can be rovided with anaxial bore con-' stituting a ousing for the crank shaft which mightdirectly engage the shaft 27 027 1, or so reverselv, the latter can beextended within the shaft 258 and can be started by means of a crank orof a suitable drivin device.

The shaft 258 is journalle at 308 in the casing 250, and 309 and 310 inthe opposite B5 ends of the hollow shaft 254 and at 311 in the cheek264. Friction reducin bearings 312 and 313 are also provided at the endsof the links 2546 and 258?) while additional friction reducing bearings314 and 315 are provided between the gears 261 and 262, on the one.hand, and. the cheek plates 263 and 264, on the other hand. Suitablepackings 316, 317 and 318 are also provided for preventing leakage offluid.

The outer shaft 254 has a flange 319 extending in a corresponding groove320 formed in a member 321 rigidly secured on the cheek 302 which can bemade in two arts. This arrangement avoids any axial placement 'masses,furthermore, the fixed and internally to secure by Letters Patent is:

toothed gear 272 has two toothed crowns,

which can be of any suitable type in order to eliminate axial stresses.

In the form of construction illustrated, the movable casing, carrying apart of the epicyclic device, is-directly centered on an annular art 326rigid with the cheek 302.

hat I claim as my invention and desire 1. In a compressor or pumpcomprising a cylindrical body provided with suction and delivery ports,shafts coaxial with the cylindrical bodies for receiving radial bladesand which have at their ends cranks and means for entraining the saidcranks and consequently the coaxial shafts and the blades in rotationwith a variable movement for varying the volume of the chambers limitedby the said cylindrical body and the said blades for effecting thedesired suction and delivery, the combination of links designed as afork at one of their ends for engaging on the said cranks so as toprevent the overhanging of the link axles, eccentric journals or crapins for constituting link axles for the other ends of the said links,externally toothed wheel strengthened by cheeks through the saideccentric journals or crank pins, a movable casing or support bearinglink axles of the said externally toothed wheels, the said movablecasing being united with the driving shaft of a fixed and internallytoothed crown for engaging with the said cheeked externaliy toothedwheels so that the said latter wheels are entrained in gyration by thesaid casing and in rotation by the said internally toothed double crown.I

2. In a compressor or pump comprising a cylindrical body provided withsuction and delivery ports, shafts coaxial'with the cylin Y dricalbodies for receiving radial blades and which have at their ends cranksand means for entraining the said cranks and consequently the coaxialshafts and.the blades in rotation with a variable movement for varyingthe volume of the chambers limited by the said cylindrical body and thesaid blades for effecting the desired suction and delivery, thecombination of links desi ned as a fork at one of their ends forengaging on the said cranks so as to prevent the overhanging of the linkaxles, eccentric journals or crank pins for constituting link axles forthe other ends of the said links, externally toothed wheels,

strengthened by cheeks through the said eccentric ournals or crank pins,the said externally toothed wheels strengthened by assaeos cheeks beingprovided on their external faces with grooves for constituting bearingsfor axles, a movable casing or sup ort bearing the said link axles andunited with the driving shaft, a fixed and internally toothed doublecrown for engaging with the said externall toothed wheels strengthenedby cheeks so that the said latter wheels are entrained in gyration bythe said casing and in rotation by the said internally toothed doublecrown.

3. In a compressor or pump comprising a cylindrical body provided wlthsuction and deliver ports, shafts coaxial with the cylindrical body forreceiving radial blades and which have at their ends cranks and meansfor entraining the said cranks and consequently the coaxial shafts andthe blades in rotation with a variable movement for varyin the volume ofthe chambers limited by t c said cylindrical body and the said bladesfor effecting the desired suction and delivery, the combination of linksdesigned as a fork at one of their ends for engagin on thessaid cranksso as to prevent the over anging of the link axles, eccentric journalsor crank pins for constituting link axles for the other ends of the saidlinks, externally toothed wheels strengthened by cheeks through the saideccentric journals or crank pins, the said externally toothed wheelsstrengthened by cheeks being provided on their external faces withgrooves for constituting bearings for axles, a movable casing or sup ortbearing the said link axles and united wlth the drivmg shaft, a fixedand internally double crown for engaging with the said externallytoothed wheels stren hened by cheeks so that the said latter w eels areentrained in ation by the said casing and in rotation by t e saidinternally toothed double crown, the said driving shaft coaxial with thesaid coaxial shafts and bearing the hollow blades at one of its ends forformin a bearing for the end of the internal coaxiafshaft bearing aseries of blades.

4 In a compressor or pump comprising a c l ndrical bo y provided wlthsuction and elivery ports, shafts coaxial with the c lindrlcal odies forreceiving radial bla es and which have at their ends cranks and meansfor entraini the said cranks and consequently the coaxial shafts and theblades in rotation with a variable movement for varying the volume ofthe chambers limited by the said cylindrical body and the said b adesfor efiectmg the desired suction and delivery, the comblnation of linksdesigned as a fork at one of their ends for engaging on the said cranksso as to prevent the overhanging of the link axles, eccentric]0111I18.1S or crank pins for constituting link axles for the other endsof the said links, externally toothed wheels strengthened by cheeksthrough the said eccentric journals or crank pins, the said externally-UOI toothed wheels strengthened by cheeks being provided on theirexternal faces with grooves for constituting bearings for axles,

rst and second circular cheeks for bearing the said latter axles, thesaid first cheek be ing united with the driving shaft, a oylinducalportion forming a stay for the two cheeks and being rooved for thepassage of the teeth of the said externally toothed gears strengthenedby cheeks, the said second cheek being j ournalled on a lateralextension of the said pump body and the said driving shaft coaxial withthe said coaxial shafts bearing the hollow blades at one of its ends forformin a bearing for the end of the internal coaxlal shaft bearing aseries of blades.

7 In testimony whereof I have signed this specification;

PIERRE ZENS.

